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There was a time when the launch of a new generation of PCs was a major event in the tech world. Home users could barely wait to put the new hardware through its paces, and enterprises planned their architecture and budgets around the new gear.

Those days are long gone. Today, hardware is often an afterthought in the enterprise and likely to be driven as much by employees' preferences as by centralized IT planning. Expensive, high-powered machines feel as outdated as V-8 muscle cars. In a world where computing is often done in the cloud, or else in short, data-intensive bursts on mobile devices, hardware simply doesn't matter much. This has significant implications not just for hardware makers, but for Microsoft, Google, Apple and Amazon as well.

In the days of muscle machines, Microsoft had an operating system monopoly. Today, tablets and smartphones are often used for tasks that PCs once performed, and when you take those devices into account, Microsoft has become an also-ran. A Goldman Sachs report says that if you combine traditional computers, tablets and smartphones, Microsoft has a 20% operating system market share, with Google at 42% and Apple at 24%.

Who are the winners and losers? Google is the biggest winner today, and will be even more so tomorrow. It makes money from ads, served up not just during searches, but also in Google services such as Gmail and Google Maps. Android is likely to continue to outsell the competition, which means more users, more market share and more revenue.

Another big winner will be Amazon. The more cheap devices with Internet access in use, the more people will buy online.

Microsoft is clearly the biggest loser. Its plunging market share and inability to break into mobile in a serious way could lead to a low-growth future dependent on big-ticket corporate sales with little or no traction in the lucrative consumer market.